how to check whether a data exists in multiple mysql tables on different fields

Question

I have two tables named A and B

table A- id1 id2 id3 id4

table B- id5 id6 id7 id8

I want to check whether a data exists in table A on field id1 or in table B on fields id6 or id7

Answer 1

Multiple options exist for sub-string search in MySQL

• One often overlooked option: if you are using or have access to a database client, such as Navicat, you can use the Find in database ... search
• There are other options as well as indicated in the see also links

See also

• Navicat find in database
• Other database sub-string search options